John J. McCarthy, M.D.
Hematology & Oncology Physician · Houston, TX
John J. McCarthy, M.D. is a hematology & oncology physician with a practice address in Houston, Texas, and NPI 1275578486, issued on Jun 19, 2006. Check the license (Texas E6501, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John J. McCarthy
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- E6501 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6550 Fannin St, Houston, TX 77030
- Phone
- (713) 441-0006
- Enumerated
- Jun 19, 2006
- Record last updated
- Feb 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (713) 790-2727
- Medicaid IDs
- 2122291 LA
134241208 TX
134241209 TX - Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 922 in Texas → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John J. McCarthy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license E6501Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
30 Medicare Part D claims, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John J. McCarthy among 922 hematology & oncology physician records in Texas
John J. McCarthy, M.D. is one of 922 hematology & oncology physician records with a practice address in Texas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 57% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileNo · 75% of these records are
- Record last updated2013 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Texas
There are 922 hematology & oncology physician records in Texas.
All 922 in Texas → Every provider in Houston → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ana AparicioHouston, TX 770301720033657
- Ahmed Eid, M.D.Houston, TX 770301649227406
- Susan Escudier, M.D.Houston, TX 770301831138221
- Lawrence Foote, M.D.Houston, TX 770301295777456
- Charles Geyer, MDHouston, TX 770301891795001
- Linus Ho, M.D., PH.D.Houston, TX 770301376525980
- Kevin Hude, M.D.Houston, TX 770301114996303
- Charles Manner, M. D.Houston, TX 770301760443782
Common questions
What is John J. McCarthy, M.D.'s NPI number?
John J. McCarthy, M.D.'s National Provider Identifier (NPI) is 1275578486, issued on Jun 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John J. McCarthy, M.D. located?
The NPPES record lists a practice address at 6550 Fannin St, Houston, TX, 77030. Phone: (713) 441-0006. Providers update this record themselves, so call before visiting.
How can I verify John J. McCarthy, M.D.'s license?
NPPES lists Texas license number E6501, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John J. McCarthy, M.D. prescribe under Medicare Part D?
In 2024, John J. McCarthy, M.D. had 30 Medicare Part D claims; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.